Commit 9d1bfc9e for libheif

commit 9d1bfc9e829b3b53e6d8d8690655e8be7a5cedc4
Author: Dirk Farin <dirk.farin@gmail.com>
Date:   Thu Dec 25 21:07:10 2025 +0100

    check image size against maximum  range

diff --git a/libheif/api/libheif/heif_image_handle.cc b/libheif/api/libheif/heif_image_handle.cc
index 13a6b570..ada29271 100644
--- a/libheif/api/libheif/heif_image_handle.cc
+++ b/libheif/api/libheif/heif_image_handle.cc
@@ -44,7 +44,13 @@ heif_item_id heif_image_handle_get_item_id(const heif_image_handle* handle)
 int heif_image_handle_get_width(const heif_image_handle* handle)
 {
   if (handle && handle->image) {
-    return handle->image->get_width();
+    uint32_t w = handle->image->get_width();
+    if (w > INT_MAX) {
+      return 0;
+    }
+    else {
+      return static_cast<int>(w);
+    }
   }
   else {
     return 0;
@@ -55,7 +61,13 @@ int heif_image_handle_get_width(const heif_image_handle* handle)
 int heif_image_handle_get_height(const heif_image_handle* handle)
 {
   if (handle && handle->image) {
-    return handle->image->get_height();
+    uint32_t h = handle->image->get_height();
+    if (h > INT_MAX) {
+      return 0;
+    }
+    else {
+      return static_cast<int>(h);
+    }
   }
   else {
     return 0;
diff --git a/libheif/api/libheif/heif_image_handle.h b/libheif/api/libheif/heif_image_handle.h
index f02b850f..9e5a152f 100644
--- a/libheif/api/libheif/heif_image_handle.h
+++ b/libheif/api/libheif/heif_image_handle.h
@@ -53,10 +53,17 @@ int heif_image_handle_is_primary_image(const heif_image_handle* handle);
 LIBHEIF_API
 heif_item_id heif_image_handle_get_item_id(const heif_image_handle* handle);

-// Get the resolution of an image.
+/** Get the image width.
+ *
+ * If 'handle' is invalid (NULL) or if the image size exceeds the range of `int`, 0 is returned.
+ */
 LIBHEIF_API
 int heif_image_handle_get_width(const heif_image_handle* handle);

+/** Get the image height.
+ *
+ * If 'handle' is invalid (NULL) or if the image size exceeds the range of `int`, 0 is returned.
+ */
 LIBHEIF_API
 int heif_image_handle_get_height(const heif_image_handle* handle);